package com.v512.webproject2;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class SurveyServlet2 extends HttpServlet {

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		doPost(request, response);
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		response.setContentType("text/html;charset=utf-8");
		PrintWriter out = response.getWriter();
		out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
		out.println("<HTML>");
		out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");
		out.println("  <BODY>");
		request.setCharacterEncoding("utf-8");
		
		/*Enumeration e = request.getParameterNames();
		String parameterName = null;
		while (e.hasMoreElements()) {
			parameterName = (String) e.nextElement();
			String[] values = request.getParameterValues(parameterName);
			out.println(parameterName + "<br>");
			out.println("<ul>");
			for (int i = 0; i < values.length; i++) {
				out.println("<li>"+values[i]+"</li>");
			}
			out.println("</ul><br>");
		}*/
		
		Map map = request.getParameterMap();
		Set set = map.keySet();
		Iterator it = set.iterator();
		String parameterName = null;
		while (it.hasNext()) {
			parameterName = (String) it.next();
			String[] values = request.getParameterValues(parameterName);
			out.println(parameterName + "<br>");
			out.println("<ul>");
			for (int i = 0; i < values.length; i++) {
				out.println("<li>"+values[i]+"</li>");
			}
			out.println("</ul><br>");
		}
		
		out.println("  </BODY>");
		out.println("</HTML>");
		out.flush();
		out.close();
	}

	public String filterHtml(String value) {
		value = value.replaceAll("&", "&amp;");
		value = value.replaceAll("<", "&lt;");
		value = value.replaceAll(">", "&gt;");
		value = value.replaceAll(" ", "&nbsp;");
		value = value.replaceAll("'", "&#39;");
		value = value.replaceAll("\"", "&quot;");
		value = value.replaceAll("\n", "<br>");
		return value;
	}
}
